http://www.disciplesoftheland.com/Maps.aspx


there you go. Just adjust filters to match your needs. Pretty useful.

....just in case you don't know: after you have exhausted a node, you'll need to go exhaust other two nodes before the first one to be used again.

So you basically need to:

1. look at the map I linked and filter it with the nodes you need;
2. choose which cycle you will do (there are 3 off hand nodes per grade at every zone - with 1 exception -);
3. exhaust 1st node;
4. exhaust 2nd node;
5. exhaust 3rd node;
6. go back to 1st node;
7. repeat from 3. to 6.